Razor-stropping device.



J. KEBOLA.

RAZOR STROPPING DEVICE.

APPLIOATION FILED Nov. 27, 1912A Patented Dec. 9, 1913.

LuLL'MmA PLANOGRAPH Co., wAsHlN-roh', u4 c4 'Utr a RAZOR-STROPPINGDEVICE.

Application filed November 27, 1912.

Specicaton of Letters Patent.

Patented Dec. 9, 1913.

Serial No. 733,791.

To all whom t may concern:

Be it known that l, JOSEPH KEBOLA, a citi- Zen of Austria, residing atNew Britain, in the county of Hartford and State of Connecticut, haveinvented certain new and useful Improvements in Razor-Stropping Devices,of which the following is a specilication.

My invention relates to improvements in razor stropping devices, and theobject of my improvement is simplicity and economy in construction andconvenience and efficiency in use and it is particularly adapted forsharpening blades for safety razors.

In the accompanying drawing: Figure 1 is a plan view of my razorstropping device. Fig. 2 is a side elevation of the same. Fig. 3 is asectional view on an enlarged scale on the line x a' of Fig. 1. Fig. 3ais a similar fragmentary view, with certain parts moved from theposition shown in Fig. 3. Fig. 4 is a view similar to Fig. 1 of certainparts shown therein. Fig. 5 is a similar view of the same, with certainparts moved from the position shown in Fig, 4. Figs. 6 and 7 showdifferent positions of some of the parts shown in Figs. 4 and 5. Fig. 8is a sectional view on the line g/ g/ of Fig. 1. Fig. 9 corresponds toFig. 2 and is on the same scale, with the carriage moved from theposition shown in the said figure.

My razor stropping device comprises an elongated frame A on which ismounted a strap or strop proper B and also a carriage C provided withmeans for receiving and securing a blade D for a razor and having ahandle 10 by which the said carriage C may be moved back and forth alongthe frame A and rovided with mechanism to be described for bringing theedge 11 of the blade into contact with the strop B as the said carriageis moved back and forth. The frame A comprises a pair of lateral members12 formed of sheet metal strips on edge and suitably spaced and held inposition by cross-bars 13.

Notches 14 are provided in the upper edges of the lateral members orside strips 12 and near the ends thereof for removably receiving thelaterally disposed ends of end bars 15 to which are attached the ends ofthe strop B. At one of the ends of the side strips 12 shown as the frontend there is provided a series of the such notches 14 so that a matingpair thereof may be selected for use according to the tension desiredfor the said strop B. At the front end of the side strips 12 there isprovided a pair of pivot holes 16 one in each strip for a tension handleE to be described.

The carriage C comprises a U shaped or channel piece of sheet materialhaving the cross member 17 extending across below the side strips 12 andengaged with the lower edges thereof and the lateral arms 18 extendingupwardly from the ends of the cross member 17 and engaged with the outerlateral faces of the side strips 12 and having the upper ends 19extending upwardly above the upper edges of the said side strips andprovided in the said upper ends with centrally disposed pivot holes 20for the driving shaft 21 and with a pair of holes 22 one in front andone in rear of the said shaft pivot holes 2O in which are secured shortpins 23 on which are mounted guide rolls 24. Ears 25 extend downwardlyfrom the middle of the cross member 17 of the carriage C in which ispivotally mounted the upper end of the handle 10.

Near each end of the shaft 21 and adjacent the side strips 12 there isrigidly mounted a grooved driving wheel 26. At the middle of the shaft21 there is rigidly mounted a. backing plate 27 that is suitable toreceivev and to support the blade D, and which is secured thereto bymeans of a sleeve or knuckle 28 surrounding the shaft 21. The backingplate 27 is essentially a hinge member, comprising the leaf 29 ofplate-like form suitable to serve as the support for the blade D and theknuckle 28 corresponds to the middle knuckle of a hinge, except that itis rigidly attached in a suitable manner to the shaft 21 that serves asthe pintle for the movable hinge member or clamping plate 30. rlhe saidmovable hinge member 30 comprises a pair of end knuckles 31 pivotallymounted on the pintle or shaft 21 and positioned one on each side of themiddle or intermediate knuckle 28 and from which extends radially theleaf 32.

The leaves 29 and 32 when in closed position are spaced suitably to bean approximate ft for the blade D and they are actually spaced so thatthe free ends will engage with the blade and clamping means are providedfor clamping the said leaves to the blade. As shown the clamping meanscomprise a pair of laterally disposed lugs 33 extending upwardly fromthe lateral ends of the bottom of one of the leaves, shown as leaf 29and overhanging the plate surface on the inner or blade side and spacedsuitably therefrom to admit the thickness of the blade D, leaf 32, andwedge shaped clamping ends 36 of the bar 34 which constitutes theclamping means proper. The bar 34 is pivotally mounted by its middle onthe outer face of the leaf 32 by means of a pivotal pin 35 so that thesame may be?A swung around flush with the. outer surface cross-barproper 40 of the tension device E, the ends of which are pivotallymounted in the holes 16 in the side strips 12 as already mentioned. Thetension device E comprisesthe cross bar portion 40 and a handle portion41 extending radially therefrom at about the middle thereof. As shownthe tension device E is formed of a single piece of wire having the endportions in alinement and forming the cross-bar portion 40, theoutwardly directed free ends being engaged with the holes 16, and theinner portion being formed into a loop forming the handle 41.

The cross-bar portion 40 constitutes a shaft on which are mounted, oneon each side of the handle 41, the front ends of the driving belts 39.By rotating the. cross-bar 40, as by means of the handle 41, the end ofthe belt 39 secured thereto will roll up on itself or build u a or willunroll so as to vary the tension of tie belt 39 accordingly.

Intermediate the ends each of the belts 39 pass under the guide rolls 24and over the upper periphery of the driving pulley 26 so that the beltis engaged with the greater part of the said upper periphery, or fornearly 180 degrees of the pulley surface.

Movement of the carriage C longitudinallyalong the frame A by means ofthe handle l0 carries with it of course the driving-pulleys 26,wherefore the relation of the said driving pulleys 26 and the belt 39will vary as the movement mentioned is effected. It will be noted. thatthe effect of the engagement of the driving belts 39 with the pulleys26y will be to tend to turn the shaft 21 so that the parts connectedthereto are positioned o'n the upper side of the strop B in a directionthat is the reverse of the particular longitudinal direction ofmovementl of the carriage C. The result of this condition will be thatthe blade clamping pair ofy driving belts 39. The: front ends of thebelts 39. are secured to thel device composed of the relatively fixedmember or backing plate 27 and the movable member or clamping plate 30will be swung so that the edge 1l of the blade D will be brought intocontact with the surface of the strop B by a rotary movement of theshaft 21. As such contact of the blade and the strop limitsfurtherrotary movement of the shaft 2l and the blade clamping device, itis evident that the result of further continued longitudinal movement ofthe carriage C along the frame A is toy drag the blade D along the stropB, and thereby eifect the stropping of the blade D desired. versal ofthe movement of the carriage C operates to bringv the opposite side oredge of the blade D into engagement with the strop B. Accordingly, bymoving the car- A re- 1 riage C back and forth as by means of the Duringthe stropping operation described the rear end of the frame A may besupported on any convenient support by means of the hooked end 42 andthe front endy may be supported by ueans of the handle 41 of the tensiondevice E whereby the tension ofthedriving belts 39 will be under controlduring the normal conditions of operation at. will, and may be changedat'will.

The movement described for effecting the stropping of the razor blade asthe carriage is moved back and forth consists of flopping the blade backand forth by a movement of more than 180 degrees as the direction ofmovement of the carriage is reversed, the movement in each case beingdetermined;v by the contact of the blade edge with the strop, and thestropping desired is effected by a continuation of the particularlongitudinal movement of thecarriage. Illhe Hopping movement describedis due tothe engagement of the driving belts with t-he driving wheels orpulleys as is also the tension or pressure of the blade edge in` itsengagement with the strop. Accordingly, it is evident that a variationof the tension of the driving beltsby a change in the angular positionof the. tension device will result in varying the degree of suchtensionk o-r pressure asthe blade edge is moved along the strop.

I claim as my invention A razor stropping device comprising a framehaving sidebars, a carriage slidably mounted thereon and having akshaft, and a driving. pulley and blade holding devices on the saidtshaft, and a strop mounted on the said frame, a belt engaged with thesaid pulley, one end thereof being fiXed to one end of the said4 frame,and a combined frame support and tension device positioned at the otherend. of the said frame and comprising asha-ft portionpivotally mountedbetween the said sidebars,andahand1e portion at the same time can bemanipulated to extending il'l-dially fro? tie said slft pgr- Vary thetension of the said belt.

tion7 an t e other en o the sai elt eing attached to the said shaftportion, JOSEPH KEBOLA' whereby the said handle portion may beWitnesses:

grasped by the hand and serve to support SOFRICK KERLEYZA,

the corresponding end of the said frame and LOUIS M. SCHMIDT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patente. Washington, D. C.

